Course:Compiler Design 1.a) Write a grammar for parsing the string a=b/ (c-d)*(x+y).b) Now perform a Left-most derivation for the string.c) Draw a parse tree for the string.d) Is the grammar ambiguous? Motivate your answer.2.Use the grammar you have created in Question 1 for an infix expression altechnique: Syntax Directed Definition write appropriate semantic rules to convert an injixexpression of that grammar to a prefix expression.Precedence of operators are given below (high to low):()*, /+,Associativity of operators are given below:+, -, *, /[Left Associative][Right Associative]%3DTaking into account the precedence and the associativity of the operators in this question,if any modification is needed for your grammar in Question 1 to be used in this question,do it. After the necessary modification(s),a) write the semantic rules for infix to prefix conversionb) draw the annotated parse tree for the string: a=Db/(c-d)*(x+y)

Name: Course:Compiler Design 1.a) Write a grammar for parsing the string a=b
Uploaded: 2024-03-20T06:51:23.000Z
Channel: Bartleby
Description: Course:Compiler Design 1.a) Write a grammar for parsing the string a=b/ (c-d)*(x+y).b) Now perform a Left-most derivation for the string.c) Draw a parse tree for the string.d) Is the grammar ambiguous? Motivate your answer.2.Use the grammar you have

1. (a) Write a grammar for parsing the string a=b/(c-d)*(x+y) Let S be the starting of the grammar.…

Engineering

Computer Science

1. a) Write a grammar for parsing the string a=b/(c-d)*(x+y) b) Now perform a Left-most derivation for the string. c) Draw a parse tree for the string. d) Is the grammar ambiguous? Motivate your answer.

1. a) Write a grammar for parsing the string a=b/(c-d)*(x+y) b) Now perform a Left-most derivation for the string. c) Draw a parse tree for the string. d) Is the grammar ambiguous? Motivate your answer.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

Problem 3 Design context-free grammars for the following languages: a) The set {a^i b^j c^k| i does not equal j or j does not equal k}, that is, the set of strings of a’s followed by b’s followed by c’s, such that there are either a different number of a’s and b’s different number of b’s and c’s, or both. b) The set of strings over 0 and 1 with “even” length.
10. Please write an unambiguous context free grammar CFG of the following: {All strings consisting of unbalanced parenthesis and/or brackets}
1.Write a C++ program to test whether a given digit is valid or not by entering on output your ID to check the validity of the digit and try the non valid digit on output either 2. Write a program in C++ to recognize strings under 'k+', 'km', 'kkm+' and try on output the acceptance of string under the above rules 3. Write a program in C++ to check whether a string belongs to a grammar or not for the following grammar and show the output for both the valid and invalid strings, respectively Y->mNz 4. Write a program in FLEX for implementing a calculator and do the following arithmetic expressions: 99/9/1 5-5*6 7+12/12*2
Write a BNF grammar to describe a comma separated list of 1 or more identifiers. Assume a terminal symbol named ident. Note: You can use a hyphen and > to make an arrow if required: ->
I. Represent the Context – free grammar of the following language: L = (anbm I n>=0, m>n) II. Construct a derivation tree of the context – free grammars in Step I above to give the following sets of strings: A. aabbbb B. abb
Define denotational semantics for the language of octal (base 8) numerals. Use the definition to find the value of “752”. You must define M_dec as a semantic function that maps syntactic objects written as octal numbers (with no decimal points, i.e., no fractions) to a set of non-negative decimal integer values. For Example, given the octal string “752” then: M_dec(“752”) would return 490 as its equivalent decimal value.
1- Here we have a practical grammar for generating four-function expressions as below. Please remove all left recursions in the grammar (show your elimination steps). E → E + T | E – T | T T → T * F | T/F | F F → int | (E) 2- Please determine the FIRST and FOLLOW from the revised grammar (that does not contain left recursions) in above Question 1.
Design a context-free grammar for the following language. Use S as the start variable. Explain your CFG in brief (in not more than 3 sentences). L={w∈{a,b,c}^*:w=(a^p)(b^q)(c^r),p,q, r>0, p=2r+1, q is divisible by 3}
Topic: Concepts of programming Language 3. a) Differentiate between top-down and botton-up parsing. b) For the following grammar, draw the parse tree of aaAbBbS → aAb|bBA A → ab|aAB B → bB|b
Q7 Select all the statements below which are TRUE: 1. Consider the grammar below: S → AaAa | BbBa A → Aaa | λ B → b If we apply the substitution rule for B, then we get the following equivalent grammar: S → AaAa | bbBa A → Aaa | λ If L is a context-free language, then L is regular. If G is a context-free grammar, then the right-most derivation is obtained if the right-most variable is replaced at each step of the derivation.
1. (a) Write the prefix form for the expression a *- ( b + c ) (b) Write an SDD for the following grammar, which converts infix expressions to prefix expressions. E -> E + T | T T -> T * F | F F -> id | (E) 2. Write the quadruples, triples, and indirect triples for the following expression - (a+b)*(c+d) - (a+b+c)
1. Draw a parse tree for the string ddadddd using buttom-up and Top-down methods with the Context-Free Grammar below:Q → dQbb | FF → aF | ε 2. What is the problem with a grammar that generates two different parse trees? Give an example. 3. Differentiate between top-down and bottom-up parsing methods using a typical grammar. 4. Write a regular expression to describe inputs over the alphabet {a, b, c} i) that are in sorted order ii) containing at least one a and at least one b 5. Construct the NFA that will accept the string of (dc|ac)* dc (gg|bb)*dc.